forked from HPR/hpr-tools
a3c8586730
Show_Submission/extract_images: some tidying, addition of more POD
documentation.
Show_Submission/query2csv, Show_Submission/query2json: these softlinks
were turned to hard links to make them more visible in the Git repo.
The files are in the 'Database/' directory.
135 lines
3.2 KiB
Perl
Executable File
135 lines
3.2 KiB
Perl
Executable File
#!/usr/bin/env perl
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#===============================================================================
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#
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# FILE: query2json
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#
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# USAGE: ./query2json query
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#
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# DESCRIPTION: Runs a query given as the only argument. Caution is needed
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# since *any* query will be run. The result of the query is
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# output in JSON form on STDOUT.
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#
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# OPTIONS: ---
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# REQUIREMENTS: ---
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# BUGS: ---
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# NOTES: Had to revert to MySQL because of a problem with DBD::MariaDB
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# AUTHOR: Dave Morriss (djm), Dave.Morriss@gmail.com
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# VERSION: 0.0.2
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# CREATED: 2021-06-18 13:24:49
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# REVISION: 2023-01-05 16:17:24
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#
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#===============================================================================
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use 5.010;
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use strict;
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use warnings;
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use utf8;
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use Config::General;
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use JSON;
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use DBI;
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use Data::Dumper;
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#
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# Version number (manually incremented)
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#
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our $VERSION = '0.0.2';
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#
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# Script and directory names
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#
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( my $PROG = $0 ) =~ s|.*/||mx;
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( my $DIR = $0 ) =~ s|/?[^/]*$||mx;
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$DIR = '.' unless $DIR;
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#-------------------------------------------------------------------------------
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# Declarations
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#-------------------------------------------------------------------------------
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#
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# Constants and other declarations
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#
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my $basedir = "$ENV{HOME}/HPR/Database";
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my $configfile = "$basedir/.hpr_livedb.cfg";
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my ( $dbh, $sth1, $aref1 );
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my ( $query, $result, $json );
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#
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# Enable Unicode mode
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#
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binmode STDOUT, ":encoding(UTF-8)";
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binmode STDERR, ":encoding(UTF-8)";
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#
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# Load database configuration data
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#
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my $conf = Config::General->new(
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-ConfigFile => $configfile,
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-InterPolateVars => 1,
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-ExtendedAccess => 1
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);
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my %config = $conf->getall();
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#-------------------------------------------------------------------------------
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# Options and arguments
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#-------------------------------------------------------------------------------
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$query = shift;
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die "Usage: $PROG query\n" unless $query;
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#-------------------------------------------------------------------------------
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# Connect to the database
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#-------------------------------------------------------------------------------
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my $dbhost = $config{database}->{host} // '127.0.0.1';
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my $dbport = $config{database}->{port} // 3306;
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my $dbname = $config{database}->{name};
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my $dbuser = $config{database}->{user};
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my $dbpwd = $config{database}->{password};
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#$dbh = DBI->connect( "DBI:MariaDB:host=$dbhost;port=$dbport;database=$dbname",
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# $dbuser, $dbpwd, { AutoCommit => 1 } )
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# or die $DBI::errstr;
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$dbh = DBI->connect( "dbi:mysql:host=$dbhost;port=$dbport;database=$dbname",
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$dbuser, $dbpwd, { AutoCommit => 1 } )
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or die $DBI::errstr;
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#
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# Enable client-side UTF8
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#
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$dbh->{mysql_enable_utf8} = 1;
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#
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# Set up the query
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#
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$sth1 = $dbh->prepare($query) or die $DBI::errstr;
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if ( $dbh->err ) {
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warn $dbh->errstr;
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}
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#
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# Perform the query
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#
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$sth1->execute;
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if ( $dbh->err ) {
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warn $dbh->errstr;
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}
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#
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# Grab everything as an arrayref of hashrefs
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#
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$result = $sth1->fetchall_arrayref( {} );
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#
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# Prepare for JSON, forcing object key sorting (expensive)
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#
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$json = JSON->new->utf8->canonical;
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#
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# Encode the Perl structure to JSON
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#
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print $json->encode($result), "\n";
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exit;
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# vim: syntax=perl:ts=8:sw=4:et:ai:tw=78:fo=tcrqn21:fdm=marker
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